我怎么知道我应该使用哪个C ++标准版本来构建哪个版本的Boost？

Question

When you download the Boost sources, there's no indication of which C++ language standard version you should be using to build it. But - clearly there's no auto-selection, since if you don't set, say, at least --std=c++11 then some configuration checks for C++11 features fail. So it's up to you, the builder, to set that.

But - how do I know which C++ standard version to use for which Boost version? Is there like a table somewhere?

Specifically, I just built Boost 1.62.0 with --std=c++14 and got innumerable warnings about the use of sts::auto_ptr which is deprecated. So, should I have stuck with C++11? How can I tell?

Answer 1

Unfortunately, some boost developers haven't updated their implementation with the newest standards (even C++11) with the problems that you present. There is a boost_config set of macros that can be used for keeping up with compatibility.

But usually the problem with the compilers is using an older one not newer.

Answer 2

Warnings are no errors. C++14 supports std::auto_ptr with no restrictions. So you can use C++14, but you should not use std::auto_ptr in your new code. You should also not use std::auto_ptr with C++11. EDIT: Since the OP didn't get the glue. If both support it, it makes no difference and he can use which one he likes.

Answer 3

Dont know about the Boost but you can get the c++ version from any c++ compiler like this -

 if( __cplusplus == 201103L ) std::cout << "C++11 " ;
 if( __cplusplus == 199711L ) std::cout << "C++98 " ;
   //... like this